Steve is correct, *it IS a violation for neutral to carry load current*.
It used to be allowed, but code was changed many years ago, and older
equipment is grandfathered.
You mean ground to carry load current?
Thanks, 73, Jim W7RY
On 12/28/2022 12:37 PM, Jim Brown wrote:
On 12/28/2022 7:27 AM, Paul Christensen wrote:
"Neutral to chassis ground and ground, ground, ground everything
together, and to the 240 ground coming into the power supply."
That's what ETO did in the Alpha 70/77 series amps. It's not
strictly a NEC violation because NEC is a premise wiring and safety
standard, and not a product wiring standard.
If there IS a neutral, it must NOT go to the chassis, because it
places a second bond on the system. In any power system, neutral must
be bonded to ground at one, and ONLY one point, within a rather
limited distance from the service. That bond is most commonly in the
main entry panel.
Steve is correct, it IS a violation for neutral to carry load current.
It used to be allowed, but code was changed many years ago, and older
equipment is grandfathered.
Use the common connection point between two 120 volt windings, wired
in series, on the input of the HV transformer for 240 use.
Yes, another common scheme.
That's what K4XU did in the original Ten Tec Titan to run the blower.
73, Jim K9YC
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