[TowerTalk] Voltage Breakdown For Enameled Wire
gwy4ever at gmail.com
Mon Jan 29 04:35:21 EST 2018
Greetings to all,
I agree with Grant Saviers, KZ1W, on recommending Tempco magnet-wire.
Tempco guarantees their product to be USA manufactured. I use their
GP/MR-200 grade magnet-wire rather than the Soderon155. GP/MR- 200 is
temperature rated to 200°C, chemical resistant, with a minimum breakdown
voltage of 4,275 volts at 200° and 5,700 volts at room temperature.
Average rated breakdown voltage at 200°C is 10.3 KV. I've been using
this particular wire in 12, 14, 18, and 24 gauge for many years now (in
non-ham technical applications) with zero issues. Fresh #31 and #43
cores are arriving tomorrow from Arrow.com so I'll be winding some
chokes here shortly. Amps on hand include an old Heathkit HL2200 plus
an Ameritron AL-80B; neither of which get operated beyond 700 watts. So
expectations here are high for positive results.
Something to consider: The insulation on Soderon155 acts as a flux upon
soldering therefore it need not be prepped for soldering. In contrast,
GP/MR-200 insulation must be mechanically removed prior to soldering.
Stephen Lee, N7RV
On 1/28/2018 6:02 PM, Jim Brown wrote:
> I'm once again considering winding high power chokes with enameled wire.
> < SLee snipped original msg for brevity>
> Suggestions? 73, Jim K9YC
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