I have an HL-1K from THP, and the power cord is only 2 conductors. The
manual gives wiring schemes for 100v, 110v, 117/120v, 200v,220v, and
234/240v.
Only the 2 leads are illustrated (obviously a hot / neutral for
100-120v, 2 hots for 240v). It shows no ground OR neutral connections
to the wiring terminals.
So I am also curious to see what is recommended to wire one of these
early THP amps for single phase 240v if putting the green (neutral) wire
to the chassis is a no-no. (obviously I had planned to put a 3 wire cord
on this amp, perhaps now it will need a 4 wire?)
73 Kevin K7ZS
Robert Groh wrote:
> No, no, never connect the neutral to any ground (e.g. the case, the grounding
> conductor in the 4-wire line, etc)!
>
> That is a violation of the electrical code and dangerous on top of it. I
> can't tell you what use the HL-2K uses - hopefully someone can give the
> answer on what you do with the neutral connection. The neutral (in
> combination with 1 of the hot wires) is used to give you a 120VAC power
> connection (for relays, small power supplies, fans, whatever).
>
> 73
> Bob, WA2CKY
>
>
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