Merge of data in

HDP20 pin assignments - finalisation

https://webuildplanes.com/adam-dickson-sling2/p/6939/hdp20-pin-assignments-finalisation

Electrical circuit breaker planning 6

https://webuildplanes.com/adam-dickson-sling2/p/7173/electrical-circuit-breaker-planning-6

with aim of estimating wire requirements, especially the run from the circuit breakers and switches to the midsection interconnects

Allow for runs directly from the CBs to the midsection interconnects

Allow for runs from the switches to the midsection interconnects

Using circuit breaker headings

"MASTER BUS"

"START" - 18AWG runs from 5A circuit breaker to ignition switch, then to midsection interconnect

• Connector A
• size 20 pin (purple band)
• start (pull up) (27)

"BOOST" - 18AWG runs from 3A circuit breaker to boost switch at left of panel switch, then to midsection interconnet

• Connector A
• 2 size 20 pins (purple band)
• pos (28)
• neg (42)

"STBY CHG" - 20AWG runs from 5A circuit breaker to midsection interconnect

• Connector A
• 2 size 20 pins
• charge/sense (17)
• backup master (7) - connected to GND

"STBY OUT" - 16AWG runs from 10A circuit breaker to midsection interconnect

• Connector A
• 3 size 16 pins (13A rating)
• backup out (4 20AWG wires from DB15 condensed into 1 pin) (6)
• backup gnd (3 20AWG wires from DB15 wires condensed into 1 pin) (1)
• pass-thru (3 20AWG wires from DB15 wires condensed into 1 pin) (5) - not connected
• this connection may not actually be used, if it is decided that the pass-through function of the backup battery is not utilised

"STROBE" 18AWG runs from 5A circuit breaker to panel switch then to 2 wires midsection interconnect

"NAV LT" 18AWG runs from 5A circuit breaker to panel switch to midsection interconnect

• Connector B
• 6 size 20 pins (purple band)
• wing strb pos (10)
• tail strb pos (23)
• wing sync (37)
• tail sync (36)
• neg (3)
• nav pos (11)
• the sync lines can be 20AWG

"TAXI LT" 16AWG runs from 10A circuit breaker to panel switch to to midsection interconnect

• Connector A
• 2 size 16 pins, 
• pos (34)
• neg (4)

"LDG LT" 16AWG runs from 10A circuit breaker to panel switch then 2 wires run to midsection interconnect

• Connector B
• 3 size 16 pins
• lh pos (4)
• rh pos (6)
• neg (5)

"AP" 18AWG runs from 5A circuit breaker to panel switch then 1 wires rund to midsection interconnecs, another runs to the autopilot

• Connector A
• 6 size 20 pins, (2 purple band)
• 20 AWG pos and neg wires are combined into single 18AWG wires, using purple band pins
• pos (10)
• neg (22)

"USB" 18AWG runs from 7.5A circuit breaker to panel switch, one 18AWG wire runs to panel USB, another 18AWG wire runs to midsection interconnect

• Connector B
• 1 size 16 pin and 1 size 20 pin (purple band)
• pos (35)
• neg (34)

"EFIS" 20AWG runs from 5A circuit breaker to panel switch then one wire runs to panel EFIS and EMS220 warning light

• high side for the EMS220 warning light output (low side is EMS220 warning light output)
• the main bus voltage monitored by the EMS220
• Connector A
• 1 size 20 pin
• main voltage (13)

"AVNCS" runs from 10A circuit breaker to panel switch then 2 wires run to main bus the other goes to the the STBY OUT circuit breaker

"COM" runs from 7.5A circuit breaker to panel mounted Radio

"FLAPS" 20AWG runs from 5A circuit breaker to midsection interconnect

• Connector A
• 5 size 20 pins
• pos (24)
• gnd (38)
• flap up (12)
• flap down (39)
• airspeed (25)

"TRIM" 20AWG runs from 2A circuit breaker to midsection interconnect

• Connector A
• 2 size 20 pins 
• red (44)
• grn (43)

"BK EFIS" runs from 1A circuit breaker to panel mounted HORIS

"FLARM" 20AWG runs from 3A circuit breaker to midsection interconnect

• Connector B
• 3 size 20 pins
• pwr (39)
• gnd (25)

"CAB LT" 20AWG runs from 1A circuit breaker to panel switch then 2 wires run to midsection interconnect

• Connector B
• 3 size 20 pins,
• white gnd (33)
• red gnd (47)
• plus 12-16V (32)
• plus 12-16V line is connected to PWM dimmer control output
• white and red gnds are switch-connected to gnd bus

"HEADSET" 20AWG runs from 1A circuit breaker to midsection interconnect

• Connector A
• 1 size 20 pin
• headset pwr (21)