Originally posted by clinkous
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But I noticed in this one that the 3-prong power cord is not wired safely:
1. The hot (black) wire is always wired to the fuse first; THEN the switch.
2. The neutral (white) wire is always wired directly to the power transformer. A tie point can be used but creates an unnecessary non-insulated exposed point, so soldering the transformer and neutral wires together directly, covered with heat shrink is safer and "cleaner".
3. The "death cap" is useless. as is the ground switch, unless parts are used as a tie point. Clip off the cap and toss it after the thing is wired safely.
4. I can't see how the ground wire is attached, but it seems headed to a power transformer attachment bolt (hopefully a tie point with a star washer and chassis paint scraped away). That's typical and fine. Directly soldered to the chassis is best but takes one big mutha iron!
Thew main point, thought, it that basic electrical safety rules (and UL) require the hot side to be first fused, then switched - but never in "continuous connection". The way this one is wired the power transformer is always "hot" when the amp is plugged in - even if the fuse blows!
Please keep yourself safe and change the wiring - and just bypass that ground switch altogether to keep things neat.
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