Tornado Black Lead 12 in. 19537

The Tornado Black Lead 12 in. 19537 is the genuine OEM black internal lead for the PS Series professional spotters, supplied twelve inches long with its terminations made up. It also fits the Tornado PS8226 Spotter 98226, the 230-volt build of the deluxe PS Series spotter.

Compatible Models for the Black Lead 19537

• Tornado PS Spotter 98220 — PS Series professional spotter, 115V
• Tornado PS8221 Spotter 98221 — the 230-volt build of the same spotter
• Tornado PS8225 Spotter 98225 — deluxe PS Series spotter
• Tornado PS8226 Spotter 98226 — the 230-volt build of the deluxe PS Series spotter, Series D & E

Tornado’s factory cross-reference for this lead is complete rather than truncated: Series C through G of the 98220, Series F and G of the 98221, and the 98225. Call us at 763-535-0770 with your model and serial number if yours is not listed.

Please call to confirm the gauge before ordering

Being straight with you about a discrepancy rather than papering over it. Tornado’s parts table lists this lead as 6 AWG. Six-gauge is very heavy conductor — the sort of wire used for circuits drawing fifty amps and upward — and the companion leads in the same enclosure are 14, 16 and 18 gauge, which is what you would expect on a machine of this rating.

That strongly suggests a transposition in the book, most likely for 16 AWG. But we publish what the source says and we do not guess at a specification we cannot verify, so the figure above is the factory’s and the caveat is ours. Call us at 763-535-0770 with your serial number before ordering and we will confirm the actual gauge with the factory. It takes a minute and avoids a lead that will not terminate into the crimps your machine uses.

It is also not currently listed in the dealer catalog we price from, which is why there is no price shown here.

What the lead does

Black insulation identifies an ungrounded — live — conductor in North American practice. This is one of the leads that carries supply current inside the electrical enclosure, between the cord, the switch and the loads.

Two things about a made-up lead are worth understanding. The first is that the length is the specification as much as the gauge: inside a compact enclosure there is no room for surplus, so a longer lead ends up folded against the cover where it is pinched when the cover closes, and a shorter one leaves standing tension on both terminations — and a terminal under constant tension is one that eventually lets go.

The second is that the terminations are part of the part. A lead made up at the factory has crimps matched to the gauge and the terminals it mates with. A hand-made substitute with the wrong crimp looks perfectly acceptable and then works loose under the continuous vibration of a motor and pump running in the same housing.

When to replace it

Replace the lead if the insulation is cut, cracked, abraded through, melted or heat-discoloured anywhere; if copper is visible; if a terminal is corroded, burnt, loose on the lead or badly crimped; if strands have broken at a termination, which usually shows as the lead flexing far too easily at one point; or if it has been spliced, lengthened or shortened.

Replace it on sight if there is any evidence of heat — browned insulation, a darkened terminal, a scorch mark where it rests against something. Heat at a joint means resistance where there should be none, and that condition worsens as it ages.

Check it whenever the electrical cover is off, and particularly after any work on the switch, the pump or the motor, since those jobs disturb the internal wiring.

Fitting notes

Isolate the machine from the mains before the cover comes off and keep it isolated throughout. Photograph or label the wiring before disconnecting anything — the machine has more than one black lead and the colour alone will not tell you which terminal each came from.

Use the correct terminal and crimp tool for the gauge, and pull-test each crimp before it goes back in. Route the lead so it cannot be pinched as the cover closes or chafed by anything that moves, and fit a new cover gasket so the enclosure seals again. Confirm the protective earth is properly connected before closing up, and test the machine on an earth-leakage protected supply before it returns to service.

Twin City Vacuum has been selling and servicing Tornado equipment since 1956 and can check factory specifications on parts whose published data disagrees.

You can browse every assembly for this machine on our Tornado PS Spotter 98220 parts page, and the manufacturer’s specifications are published at tornadovac.com.

Frequently Asked Questions

What gauge is the Black Lead 19537?

Tornado’s parts table lists it as 6 AWG, and we publish what the source says. But six-gauge is very heavy conductor and the companion leads in the same enclosure are 14, 16 and 18 gauge, so the figure looks like a transposition in the book. Call us at 763-535-0770 before ordering and we will confirm the actual gauge with the factory rather than guess.

Why is there no price shown for the Black Lead 19537?

Because it is not currently listed in the dealer catalog we price from. Call us at 763-535-0770 with your serial number and we will quote it and confirm availability at the same time as the gauge.

Can I make up my own lead instead?

It is not a good idea. The terminations are part of the part: a factory lead has crimps matched to the gauge and to the terminals it mates with, while a hand-made substitute with the wrong crimp looks acceptable and then works loose under the continuous vibration of a motor and pump in the same housing. The length matters too — too long gets pinched by the cover, too short leaves tension on both terminals.

How do I order the Black Lead (part# 19537) or get help?

Call us at 763-535-0770 to order the Black Lead (part# 19537). We will confirm the gauge, current pricing and availability with the factory when you call. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956.

Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428.